A colour photograph showing details of the damage to the facade of the Clarendon Hotel following the 22 February 2011 earthquake.
A digitally manipulated image of three arched windows in a damaged stone building.
Child standing beside a damaged building on Colombo Street, with the Copthorne Hotel and Forsyth Barr buildings in the background.
Damage to fences in the CBD. A couple of road cones have been put in front to keep the public away from the damaged fence.
Photo of damage in Selwyn, taken by Dan Harrison, 6 September 2010.
Photos of damage in Waimakariri River Regional Park, taken by David Owen.
Photo of damage in Waimakariri, taken by Ian Heslop, 5 September 2010.
Photo of damage in Kaiapoi, taken by Ian Heslop, 12 September 2010.
Photo of damage in Kaiapoi, taken by Compliance Enforcement, 10 September 2010.
A colour photograph detailing damage to the northwest corner of the former PGG Building at 178 Cashel Street.
A photograph of a damaged house captioned by BeckerFraserPhotos, "An earthquake-damaged house on Locksley Avenue".
A photograph of a damaged house captioned by BeckerFraserPhotos, "An earthquake-damaged house on Locksley Avenue".
Damage to the Dolls House night club and the Coffee Queen cafe on Gloucester Street, beside Chancery Lane.
Transcript of Eric's earthquake story, captured by the UC QuakeBox project.
Transcript of Jacqui's earthquake story, captured by the UC QuakeBox project.
Transcript of Lorraine's earthquake story, captured by the UC QuakeBox project.
Transcript of Roman's earthquake story, captured by the UC QuakeBox project.
Transcript of Lorraine Savory's earthquake story, captured by the UC QuakeBox project.
Transcript of John Brownie's earthquake story, captured by the UC QuakeBox project.
Transcript of Audrey Read's earthquake story, captured by the UC QuakeBox project.
A letter written by Roz Johnson to family members overseas.
An entry from Roz Johnson's blog for 09 June 2013 entitled, "Outer Spaces".
After the September, 1888 earthquake centred in Hanmer caused extensive damage to the Christchurch cathedral, the government geologist, Alexander McKay was sent out to review the land damage. This …
Earthquake damage. As a result of the September 2010 earthquake, with further damage from the February 2011 event.
Earthquake damage. As a result of the September 2010 earthquake, with further damage from the February 2011 event.
Earthquake damage. As a result of the September 2010 earthquake, with further damage from the February 2011 event.
High demolition rates were observed in New Zealand after the 2010-2011 Canterbury Earthquake Sequence despite the success of modern seismic design standards to achieve required performance objectives such as life safety and collapse prevention. Approximately 60% of the multi-storey reinforced concrete (RC) buildings in the Christchurch Central Business District were demolished after these earthquakes, even when only minor structural damage was present. Several factors influenced the decision of demolition instead of repair, one of them being the uncertainty of the seismic capacity of a damaged structure. To provide more insight into this topic, the investigation conducted in this thesis evaluated the residual capacity of moderately damaged RC walls and the effectiveness of repair techniques to restore the seismic performance of heavily damaged RC walls. The research outcome provided insights for developing guidelines for post-earthquake assessment of earthquake-damaged RC structures. The methodology used to conduct the investigation was through an experimental program divided into two phases. During the first phase, two walls were subjected to different types of pre-cyclic loading to represent the damaged condition from a prior earthquake, and a third wall represented a repair scenario with the damaged wall being repaired using epoxy injection and repair mortar after the pre-cyclic loading. Comparisons of these test walls to a control undamaged wall identified significant reductions in the stiffness of the damaged walls and a partial recovery in the wall stiffness achieved following epoxy injection. Visual damage that included distributed horizontal and diagonal cracks and spalling of the cover concrete did not affect the residual strength or displacement capacity of the walls. However, evidence of buckling of the longitudinal reinforcement during the pre-cyclic loading resulted in a slight reduction in strength recovery and a significant reduction in the displacement capacity of the damaged walls. Additional experimental programs from the literature were used to provide recommendations for modelling the response of moderately damaged RC walls and to identify a threshold that represented a potential reduction in the residual strength and displacement capacity of damaged RC walls in future earthquakes. The second phase of the experimental program conducted in this thesis addressed the replacement of concrete and reinforcing steel as repair techniques for heavily damaged RC walls. Two walls were repaired by replacing the damaged concrete and using welded connections to connect new reinforcing bars with existing bars. Different locations of the welded connections were investigated in the repaired walls to study the impact of these discontinuities at the critical section. No significant changes were observed in the stiffness, strength, and displacement capacity of the repaired walls compared to the benchmark undamaged wall. Differences in the local behaviour at the critical section were observed in one of the walls but did not impact the global response. The results of these two repaired walls were combined with other experimental programs found in the literature to assemble a database of repaired RC walls. Qualitative and quantitative analyses identified trends across various parameters, including wall types, damage before repair, and repair techniques implemented. The primary outcome of the database analysis was recommendations for concrete and reinforcing steel replacement to restore the strength and displacement capacity of heavily damaged RC walls.
Damage to Lyttelton following the 22 February 2011 earthquake. Forbes' Store on Norwich Quay with a broken awning and damage visible on the brick walls. Scaffolding placed around the building since the 4 September 2010 earthquake has tumbled during the 22 February 2011 earthquake.
Damage to Lyttelton following the 22 February 2011 earthquake. Forbes' Store on Norwich Quay with a broken awning and damage visible on the brick walls. Scaffolding placed around the building since the 4 September 2010 earthquake has tumbled during the 22 February 2011 earthquake.
Damaged seating in the QEII stadium. The photographer comments, "This is the QEII stadium in Christchurch. During the 22 February earthquake the stadium was severely damaged and looks like it will be demolished. Anyone in Bay 3 would have no need of the toilet after this happened".